Rotel amp (1080 & RMB1075) question

[UFObuster]

I've had these two amps for about 12 weeks now and am quite happy with my SQ output.
Question: after living with this pair for a while, I've just come to notice that either amp when turned on emits a very slight buzzing sound from its cabinet...not from any speaker source....ie, no humm, etc.
Is this normal? It's only noticeable when near to them. They work just fine.

[UFObuster]

3 hours later: no humm...
I'm putting this problem down to household current...check some other threads, etc.
At any rate, it's very quiet now.....both of them silent.
For info: I live in an 80 yr old house...old wiring...old neighborhood, etc.

[Kevin D]

Not common, but not unheard of. Like the other threads it does usually boil down to current issues.

If you haven't planned on running a new 15a circuit, I would. Running just a 1080 on an older shared circuit can cause issues, adding a 1075 and your other equipment has to be straining it.

Kevin D.

[UFObuster]

Thanks, Kevin
At around 11pm ESt....stilll no buzz...will wait and see but I'm getting more and more sure that it's not an issue with the amps. For readers: this looks more and more like an issue with my 80 yr/old house......not a Rotel issue.

[bleeding ears]

The buss might be happening only when other appliances are running and drawing current, eg air conditioning, pool filters, etc etc.

Hey while we are at it, do you hear much difference in sound quality between the 1075 and the 1080 ? (not the buzzing just the music) ? :lol:

Pete

[UFObuster]

The buss might be happening only when other appliances are running and drawing current, eg air conditioning, pool filters, etc etc.

Hey while we are at it, do you hear much difference in sound quality between the 1075 and the 1080 ? (not the buzzing just the music) ? :lol:

Pete

You know, Pete, I've not really tested them in the same config...but no, I can not hear ANY difference in them. I did this two amp thing to overcome a deficit in how my Klipsch RF-7 front pair sounded. They are just very finicky about power and the 2-channel RB-1080 makes them VERY happy. The 1075 does the center (an RC-7), surround (a pair of RF-5), and center/back (RC35)...all Klipsch but not known to be as "power hungry" as the fronts so the difference in watts/channel is no big thing. The 1075 is so good I don't even think of it being there. It's just good balanced sound front to back. Sometimes I have to deliberately play back a DVD-a or SACD disc just to remind me how good they are....otherwise they simply "dissappear" in a beautiful 3d sound field.
I also like pure 2 channel music....ditto the 1080/RF7 combo....but the sound in DTS neo6 "faked" surround is so good with these Rotels, I use it more and more depending on the recording.
I've never heard the digital amps because I'm just not going there in price...but I can't see how I could be hearing anything better than this Rotel combo that I have. Especially for the $$!! What great buys! And they look cool!

[JDH]

When I owned the RB-1080 and RMB-1075 my RB-1080 also had a slight buzz sound from its transformer too (not enough to bother me though). The RMB-1075 was dead quiet.

I ended up selling the RB-1080 and RMB-1075 for a even better 7 ch amp (Elektra 7) due to the dreaded left channel fuse issue with the RB-1080 which was never fully fixed completely in my opinion.

JDH.

[UFObuster]

When I owned the RB-1080 and RMB-1075 my RB-1080 also had a slight buzz sound from its transformer too (not enough to bother me though). The RMB-1075 was dead quiet.

I ended up selling the RB-1080 and RMB-1075 for a even better 7 ch amp (Elektra 7) due to the dreaded left channel fuse issue with the RB-1080 which was never fully fixed completely in my opinion.

JDH.

Yes!! and so would I....but at $4K....I guess I'll stay here in Rotel land and enjoy the experience of good sound on a low budget :P ....but that Elektra sure looks good!